JP7520700B2 - Packaging - Google Patents

Description

Article 30, Paragraph 2 of the Patent Act applies. Kanae Co., Ltd. exhibited at the 10th Cosmetics Development Exhibition [Tokyo] - COSME Tech 2020 [TOKYO] on January 20, 2020.

The present invention relates to a packaging body.

Conventionally, there is known a package that can store two different types of contents separately from each other and that is configured so that these contents can be mixed inside before opening.

For example, Patent Document 1 discloses a laminate of paired films,
The laminate has an adhesive portion where the films are adhered to each other, and a storage portion where the films are not adhered to each other and a space capable of accommodating an item is formed,
The container has a first container that contains a first liquid content and a second container that contains a second powder content,
The package described herein includes a weakly bonded portion that is peeled off when the first storage portion is pressed to allow the first storage portion and the second storage portion to communicate with each other.
In this package, when the first storage section is pressed and collapsed, the first contents that have nowhere to go peel off the weakly bonded section, causing the liquid first contents contained in the first storage section to flow into the second storage section and mix with the powdery second contents.

Japanese Patent Application Publication No. 11-227843

However, in this type of conventional packaging, it can be difficult to mix the contents. Specifically, in conventional packaging, after the weakly bonded portions are peeled off, the portions of the films that constituted the weakly bonded portions do not separate sufficiently, which can make it difficult to thoroughly mix the first and second contents.

In view of the above, the present invention aims to provide a package that can easily mix two different types of contents that are stored separately.

The packaging body according to the present invention comprises:
The present invention comprises a laminate of paired films,
The laminate has an adhesive portion where the films are adhered to each other, and a storage portion where the films are not adhered to each other to form a space capable of accommodating an item,
At least one of the pair of films is a molded film having a molded portion molded in a convex shape so as to form the space,
The storage section has a first storage section that stores a first item and a second storage section that stores a second item,
the adhesive portion includes a weak adhesive portion that is peeled off by pressure from the housing portion to communicate between the first housing portion and the second housing portion,
Once both the first storage portion and the second storage portion are pressed, the recessed state of each molded portion is maintained, and the separated state of the portions of each film that constitute the weakly adhesive portion is maintained.

With this configuration, once both the first and second storage sections are pressed, the recessed state of each molded section is maintained, and the portions constituting the weakly bonded sections of each film are maintained in a separated state, thereby maintaining a space in which the first and second contents can mix together, making it possible to easily mix the first and second contents.

In addition, it is preferable that the thickness of the molded film in the packaging body according to the present invention is 40 to 250 μm.

With this configuration, the thickness of the molded film is 40 to 250 μm, which makes it easier to maintain the recessed state of each molded part and the separated state of the parts that make up the weakly bonded parts in each film, and also makes it easier to increase the distance of separation, making it easier to mix the contents.

In addition, the packaging body according to the present invention is preferably
The molded film is composed of one film material or a plurality of the film materials laminated together,
At least one of the film materials is a resin film material,
The resin film material is a polyolefin resin film material, a polyvinyl chloride resin film material, or a polyethylene terephthalate resin film material.

With this configuration, the film material constituting the molded film is as described above, which makes it easier to maintain the recessed state of each molded part and the separated state of the parts constituting the weakly bonded parts in each film, and the distance of separation becomes larger, making it easier to mix the contents.

In addition, the packaging body according to the present invention is preferably
The molded film is formed by laminating a plurality of the film materials,
One of the film materials is aluminum foil.

Compared to resin film materials, aluminum foil is more likely to deform into a bulging shape such as a sphere or dome and to maintain this deformed state. Therefore, according to the above configuration, the aluminum foil is preferable because it functions to help maintain the recessed state of each molded part and the separated state of the parts that make up the weakly bonded parts in each film.

As described above, the present invention provides a package that can easily mix two different types of contents that are stored separately from each other.

FIG. 1 is a front view of a package according to one embodiment. FIG. 2 is a rear view of the package of FIG. FIG. 3 is a cross-sectional view of the package taken along line III-III of FIG. FIG. 4 is a diagram showing a state in which each storage section of the package of FIG. 1 is pressed. FIG. 5 is a cross-sectional view corresponding to the cross-sectional view of FIG. 3, showing the state after each receiving portion has been pressed.

The following describes a package according to one embodiment of the present invention with reference to the drawings.

As shown in Figures 1 to 3, the packaging body 1 comprises a laminate 10 of a pair of films 11a and 11b.

The laminate 10 has an adhesive portion 20 where the films are bonded to each other, and a storage portion 30 where the films are not bonded to each other, forming a storage space X capable of storing an item C.

As shown in FIG. 3, the film 11a of this embodiment is a molded film 11a having a molded portion 12 molded in a convex shape to form the storage space X, and a flat portion 13 extending from the periphery of the molded portion 12. The film 11b paired with the molded film 11a is a flat film 11b that is generally flat. The molded film 11a and the flat film 11b are formed to have the same shape when viewed in a plane.

The laminate 10 is formed by bonding the flat portion 13 of the molded film 11a and the flat film 11b together without misalignment of the peripheral edges of the films. As a result, the laminate 10 has an adhesive portion 20 formed by the flat portion 13 and a portion of the flat film 11b that faces the flat portion 13, and a storage portion 30 formed by the molded portion 12 and a portion of the flat film 11b that faces the molded portion 12.

The storage section 30 has a first storage section 31 that forms the storage space X1 for the first item C1, and a second storage section 32 that forms the storage space X2 for the second item C2. In addition, an adhesive section 20 is arranged to surround each of the first storage section 31 and the second storage section 32. This makes it possible for the package 1 to store the first item C1 and the second item C2 in a state where they are separated from each other.

The adhesive portion 20 has a strong adhesive portion 21 that bonds at least the peripheral portions of each film together, and a weak adhesive portion 22 that is disposed between the first storage portion 31 and the second storage portion 32. The weak adhesive portion 22 is configured to be peeled off preferentially over the strong adhesive portion 21 when both the first storage portion 31 and the second storage portion 32 are pressed by fingers or the like. Moreover, the strong adhesive portion 21 is configured not to be peeled off during normal use, for example, by the pressure.

As shown in FIG. 4, the package 1 is configured such that when both the first storage section 31 and the second storage section 32 are pressed by fingers or the like, each molded section 12 is inverted, and even after the pressure is released, each molded section 12 remains concave, and the separated state of the weakly bonded sections 22 in each film is maintained. As a result, the package 1 is configured to form a mixing space Y between the first storage section 31 and the second storage section 32, which facilitates mixing of the first contained item C1 and the second contained item C2. In the following, in the separated state, the portion of the molded film 11a peeled off from the flat film 11b may be referred to as the first peeled portion 41, and the portion of the flat film 11b peeled off from the molded film 11a may be referred to as the second peeled portion 42.

The concave state is preferably an inverted state of the molded portion 12, which was previously convex. Specifically, the concave state is preferably an inverted state in which at least a portion of the inner surface 121 of the molded portion 12 in the molded film 11a is disposed closer to the flat film 11b than the inner surface 131 of the flat portion 13.

On the other hand, in the separated state, it is preferable that the separation distance D' between the first peeling portion 41 and the second peeling portion 42 is equal to or greater than the molding depth D of the molding portion 12. In addition, when the molding depth D of the first storage portion 31 and the second storage portion 32 is different, the separation distance D' may be equal to or greater than the molding depth D of either one of them, but is preferably equal to or greater than the molding depth D of the deeper one. In other words, in the separated state, it is preferable that a mixing space Y having a height corresponding to the separation distance D' equal to or greater than the molding depth D is formed between the first storage portion 31 and the second storage portion 32.

When each molded section 12 is configured to be inverted into a concave shape, when the weakly bonded section 22 is peeled off, the contents C that have nowhere to go tend to concentrate between the first peeled off section 41 and the second peeled off section 42, making them more likely to separate from each other. This concentration can also cause at least the first peeled off section 41 to bulge outward (in the direction opposite to the second peeled off section 42), and even cause both the first peeled off section 41 and the second peeled off section 42 to bulge outward, which can make the separation distance D' larger than the molding depth D of the molded section 12. In other words, the mixing space Y becomes larger.

The molding depth D of the molding portion 12 means the length of the longest straight line drawn toward the inner surface 121 of the molding portion 12 so as to be perpendicular to the inner surface 131 of the flat portion 13. In other words, the molding depth D means the deepest depth.

The molding depth D is preferably 1 to 70 mm, and more preferably 1 to 20 mm.

The molded film 11a may be made of a single film material, or may be made by laminating multiple such film materials.

The thickness of the molded film 11a is preferably 30 to 280 μm, and more preferably 40 to 250 μm. When the lower limit of the thickness of the molded film 11a is the above-mentioned value, the shape of the molded portion 12 is easily maintained. In other words, the shape retention of the molded portion 12 is ensured. Furthermore, when the upper limit of the thickness of the molded film 11a is the above-mentioned value, the molded portion 12 and the first peeling portion 41, once deformed, are easily able to maintain their deformed state.

At least one of the film materials is usually a resin film material made of resin. Examples of the resin film material include polyolefin resin film materials such as polyethylene resin film material (PE film) and polypropylene resin film material (PP film), polyester resin film materials such as polyethylene terephthalate resin film material (PET film), polyamide resin film materials such as nylon resin film material (Ny film), polyvinyl chloride resin film material (PVC film), polyvinylidene chloride resin film material (PVDC film), polyvinyl acetate resin film material (PVAc film), polyacrylic resin film material, polycarbonate resin film material (PC film), polyvinyl alcohol resin film material (PVA film), etc.
Among these, the polyolefin resin film material, the polyvinyl chloride resin film material, and the polyethylene terephthalate resin film material are preferred, and the polyolefin resin film material and the polyvinyl chloride resin film material are particularly preferred.

It is also preferable that at least one of the film materials is an aluminum foil (AL film).

The molded film 11a may be made of one of the above-mentioned film materials, or may be made by laminating a plurality of the above-mentioned film materials.

The flat film 11b may be made of one of the above-mentioned film materials, or may be made by laminating a plurality of the above-mentioned film materials.

Examples of the film material constituting the flat film 11b include polyolefin resin film materials such as the polyethylene resin film material (PE film) and the polypropylene resin film material (PP film), polyester resin film materials such as the polyethylene terephthalate resin film material (PET film), and polyamide resin film materials such as nylon resin film material (Ny film).

It is preferable that the flat film 11b is a transparent film that allows the storage space X and the mixing space Y to be seen.

The thickness of the flat film 11b is usually 10 to 250 μm. From the viewpoint of preventing damage to the flat film 11b due to pressure from each storage section 30, while allowing the second peeling section 42 to bulge outward, the thickness of the flat film 11b is preferably 10 to 200 μm, and more preferably 50 to 150 μm.

The adhesive portion 20 in this embodiment is formed by heat sealing the films in contact with each other. As a method for adjusting the adhesive strength of each of the strong adhesive portion 21 and the weak adhesive portion 22 in the adhesive portion 20, for example, a method of setting the sealing temperature when forming the strong adhesive portion 21 relatively high and the sealing temperature when forming the weak adhesive portion 22 relatively low can be mentioned. In this case, it is preferable to appropriately change the heat sealing temperature according to the type of the film material. In addition, a method of partially sandwiching or attaching another film material (usually a single layer) between the parts constituting the weak adhesive portion 22 in each film material, and simultaneously heat sealing the parts constituting the strong adhesive portion 21 and the weak adhesive portion 22 in each film material at the same heat sealing temperature can be mentioned. In addition, a method of applying a coating agent that can weaken the adhesive strength by preventing the parts constituting the weak adhesive portion 22 in each film material from being sealed can be mentioned.

The adhesive strength of the strong adhesive portion 21 is preferably 10 to 150 N/15 mm. The adhesive strength of the weak adhesive portion 22 is preferably 1 to 15 N/15 mm.

As shown in FIG. 1, in a plan view, each of the first storage section 31 and the second storage section 32 has a first inner edge 311 and a second inner edge 321 arranged to face each other. It is preferable that the first inner edge 311 and the second inner edge 321 are arranged parallel to each other. The first storage section 31 has a first outer edge 312 connected to the first inner edge 311 and formed away from the second storage section 32. Similarly, the second storage section 32 has a second outer edge 322 connected to the second inner edge 321 and formed away from the first storage section 31. The first storage section 31 has a pair of first corners 313a, 313b formed at the connection portion between the first inner edge 311 and the first outer edge 312. Similarly, the second storage section 32 has a pair of second corners 323a, 323b formed at the connection between the second inner edge 321 and the second outer edge 322.

In this embodiment, the first storage section 31 and the second storage section 32 each have a semi-elliptical shape in a plan view, and are arranged so as to be symmetrical with respect to the straight line passing between them. In addition, the first inner edge 311 and the second inner edge 321 are arranged so as to face each other and be parallel to each other. This allows the area of the package 1 to be relatively small. The first storage section 31 and the second storage section 32 may each have a semicircular or angular shape, etc.

2, the weakly bonded portion 22 of this embodiment is formed so as to be parallel to both the first inner edge 311 and the second inner edge 321 and to extend between them. As a result, the weakly bonded portion 22 has a predetermined length L. When the first inner edge 311 and the second inner edge 321 have the same length M as in this embodiment, the ratio of the length L to the length M is preferably 50% or more. When the first inner edge 311 and the second inner edge 321 have different lengths, the ratio of the length L to the length N of the shorter edge is preferably 50% or more. The ratio of the length L to the length M and the ratio of the length L to the length N are usually 100% or less. When the ratio of the length L to the length M (length N) is less than 100%, the strong bonded portion 21 may be arranged in the portion between the first inner edge 311 and the second inner edge 321.

As shown in Figs. 1 and 2, in this embodiment, the weakly bonded portion 22 has a base end located between the first corner 313a and the second corner 323a. In other words, the weakly bonded portion 22 is formed so that one end corresponds to one end of the portion between the first storage portion 31 and the second storage portion 32. When one end of the weakly bonded portion 22 is formed so that it corresponds to one end of the portion between the first storage portion 31 and the second storage portion 32, a mixing space Y is formed up to the end of the storage portion when peeled off, making it easier to mix the various contents.

In this embodiment, the weakly bonded portion 22 has a recess 221 formed so as to be recessed toward the first storage portion 31 and/or the second storage portion 32 in a plan view. This makes it easier for the entire weakly bonded portion 22 to be peeled off.

As shown in FIG. 3, in each of the first storage section 31 and the second storage section 32 of this embodiment, the rise angle θ of the inner side surface relative to the outer surface of the flat section 13 (the angle between the tangent to the side surface at the boundary between the molded section 12 and the flat section 13 and the outer surface of the flat section 13) is preferably 10 to 80°, and more preferably 30 to 50°. This makes it easier for each molded section 12 to become inverted when pressed by a finger or the like.

The length of the first inner edge 311 and the second inner edge 321 is preferably 5 to 150 mm. In addition, the maximum distance between the first inner edge 311 and the first outer edge 312 (or the maximum distance between the second inner edge 321 and the second outer edge 322) is preferably 10 to 150 mm. In addition, the distance between the first inner edge 311 and the second inner edge 321 is preferably 2 to 10 mm.

The capacity of each of the storage spaces X1 and X2 is preferably 0.1 to 30 mL. The capacities of the storage spaces X1 and X2 may be different, in which case the difference in capacity is preferably 20 mL or less. In addition, the ratio of the volume of the first content C1 to the capacity of the storage space X1 and the ratio of the volume of the second content C2 to the capacity of the storage space X2 are preferably 20 to 100%.
The capacity of the storage space X1 and the capacity of the storage space X2 are the maximum capacities of the first storage item C1 and the second storage item C2 that can be stored in the first storage section 31 and the second storage section 32, respectively.

The first and second contents C1 and C2 preferably contain liquids at room temperature (usually 20-30°C). The first and second contents C1 and C2 may contain a gas such as air in part. The proportion of liquid in each of the first and second contents C1 and C2 is preferably 20-100%.

Furthermore, it is preferable that the mixture M prepared by mixing the first content C1 and the second content C2 is a liquid.

Examples of mixtures M include cosmetic products such as lotions and milky lotions, hair care products such as shampoos, chemicals such as two-component adhesives, and two-component pharmaceuticals.

As shown in FIG. 1, in this embodiment, the storage section 30 further has a discharge section 33 formed to protrude radially outward from the laminate 10 to form a passage for discharging the mixture M to the outside. The adhesive section 20 also has an extension section 23 as a strong adhesive section 21 that extends in a circular shape to surround the discharge section 33. A cut 24 is formed at the base end of the extension section 23 toward the discharge section 33. This makes it easy to open the package 1. Specifically, when a user grasps the extension section 23 with his or her fingers or the like and applies force along the direction in which the cut 24 is formed, the extension section 23 is cut off and the passage is connected to the outside, and the package 1 is opened.

The package according to the present invention is not limited to the configuration of the above embodiment. The package according to the present invention is also not limited to the above-mentioned effects. The package according to the present invention can be modified in various ways without departing from the gist of the present invention.

For example, in the above embodiment, the flat film 11b is flat, but the flat film 11b may be formed into a convex shape so as to expand the storage space X.

Next, the present invention will be explained in more detail using examples.

[Manufacturing]
Raw films having the thicknesses and materials shown in Tables 1 to 5 below were prepared as raw films for producing molded films. The molded films shown in Table 1 were made only of polyolefin resin film material. The molded films shown in Table 2 were made only of polyvinyl chloride resin film material. The molded films shown in Table 3 were made to contain polyethylene terephthalate resin film material. The molded films shown in Tables 4 and 5 were made to contain aluminum foil. When multiple film materials are listed in the film material column in Tables 1 to 5, the order of listing them corresponds to the order of lamination from the outside to the inside when the package is constructed.

A formed film with two formed parts as shown in Figures 1 to 3 was produced. Depending on the material of the original film, either thermoforming, in which the film is heated, or cold forming, in which the film is not heated, was used. For thermoforming, which softens the original film, a forming device equipped with a lower die having a concave opening corresponding to the shape of the formed part was used. For cold forming, a forming device equipped with a plug having a convex tip corresponding to the shape of the formed part was used. The forming depth of the formed part was 6 mm.

Next, as the flat film, a raw film having the thickness and material shown in Tables 1 to 5 below was prepared. After filling each molded portion of the molded film prepared above with 1 mL of water, the flat films were overlapped and the peripheral portions of each film were heat sealed (180°C or higher, 1.3 seconds) to prepare a package having a first storage portion and a second storage portion (the first storage portion and the second storage portion were in a state of communication. In other words, no weakly bonded portion was formed). The lengths of the first inner edge and the second inner edge were both 42 mm. In addition, the maximum distance between the first inner edge and the first outer edge, and the maximum distance between the second inner edge and the second outer edge were both 19 mm. The volumes of the storage spaces of the first storage portion and the second storage portion were both 1.6 mL. In addition, the distance between the first inner edge and the second inner edge was 5 mm.
In order to increase the reliability of the following evaluation, five packages were prepared each and all five were evaluated.

[evaluation]
Both the first and second storage parts were simultaneously pressed with a thumb from the molded film side, and each molded part was made to be in a concave state, and the first and second peeled parts were made to be in a separated state, and the pressing was released. Using a digital caliper (MITSUTOYO, CD-P15M), the distance W between the molded film and the flat film was measured at two points on both sides of the center of the part corresponding to the weakly bonded part. In this measurement, the distance W also includes the thickness of each film, but since the thickness of each film is a maximum of 425 μm (about 0.4 mm) in Reference Example 10, it was determined that it is not necessary to take it into consideration in the evaluation.

(Evaluation method)
For five packages, the measured values of the two places, totaling 10 places, were rounded off to the nearest tenth to obtain an evaluation value, which was then compared with the molding depth (6 mm) of the molded portion. Each package was then evaluated according to the following evaluation criteria. The results are shown in Tables 1 to 5.
⊚: The number of locations where the evaluation value is equal to or greater than the forming depth is 8 or more.
◯: There are 5 or more locations where the evaluation value is equal to or greater than the forming depth.
×: The number of locations where the evaluation value is equal to or greater than the forming depth is 4 or less.

Of the packages in Tables 1 to 5, those with five or more locations where the evaluation value was equal to or greater than the molding depth were found to have their respective storage sections inverted by pressure, and the contents that had nowhere to go when pressed gathered between the storage sections, causing the first and second peeling sections to separate, forming a mixing space large enough for the contents to mix. Moreover, this state was maintained even after pressure was released. Thus, it was found that these packages were easy to mix the contents.

Tables 1 to 5 show a tendency for the gap W to become smaller as the thickness increases. On the other hand, even when the thickness is large, it was found that configurations in which the film material constituting the molded film includes polyolefin resin film material (particularly polypropylene resin film material) or polyvinyl chloride resin film material tend to have a larger gap W, making them good packages.

1: packaging body,
10: laminate, 11a: formed film, 11b: flat film,
12: Molding part, 121: Inner surface, 13: Flat part, 131: Inner surface,
20: adhesive part, 21: strong adhesive part,
22: weakly bonded portion, 221: recessed portion,
23: extension portion, 24: notch,
30: storage section,
31: first storage portion, 311: first inner edge, 312: first outer edge, 313: first corner portion,
32: second storage portion, 321: second inner edge, 322: second outer edge, 323: second corner portion,
33: discharge section,
41: first peeling portion, 42: second peeling portion,
C: container, C1: first container, C2: second container,
D: molding depth, D': separation distance, X: accommodation space, Y: mixing space, θ: rise angle

Claims (2)

The present invention comprises a laminate of paired films,
The laminate has an adhesive portion where the films are adhered to each other, and a storage portion where the films are not adhered to each other to form a space capable of accommodating an item,
At least one of the pair of films is a molded film having a molded portion molded in a convex shape so as to form the space and a flat portion extending from a periphery of the molded portion,
The formed film is
The thickness is 40 to 250 μm,
Consists of one polyethylene resin film material, one polypropylene resin film material, or one polyvinyl chloride resin film material, or
The laminate is made of a plurality of the same film materials selected from the group consisting of polyethylene resin film materials, polypropylene resin film materials, polyethylene terephthalate resin film materials, nylon resin film materials, and polyvinyl chloride resin film materials, or is made of a laminate of a plurality of different film materials selected from the group, or is made of a laminate in which aluminum foil is further laminated on the above laminate,
The storage section has a first storage section that stores a first item and a second storage section that stores a second item,
The adhesive portion includes a weak adhesive portion that is peeled off by pressing the storage portion to connect the first storage portion and the second storage portion, and is formed by bonding the flat portion of the molded film to another film ,
The side surfaces of the first and second accommodating portions that face each other have a rise angle of 10 to 50 degrees with respect to the flat portion,
A package in which, once both the first storage section and the second storage section are pressed, a recessed state of each inverted molded section is maintained in which the inner surface of the pressed portion of each molded section is positioned closer to the other film than the inner surface of the flat portion of the weakly bonded section, and a separated state of the portions of each film that constitute the weakly bonded section is maintained. The packaging body according to claim 1 , wherein the formed film is a laminate having the aluminum foil laminated thereon .